#0A152B#0A152B

#0A152B is a very dark, muted blue. Relative luminance 0.008; OKLCH L 19.9% C 0.047 H 262.8°. Best body text is #FFFFFF at 18.18:1 contrast (WCAG AA passes).

Color values

HEX	#0A152B
RGB	rgb(10, 21, 43)
HSL	hsl(220, 62%, 10%)
HSV	hsv(220, 77%, 17%)
CMYK	cmyk(76.7%, 51.2%, 0%, 83.1%)
CIE-LAB	lab(7.00, 3.78, -16.35)
CIE-LCH	lch(7.00, 16.78, 283.04°)
OKLab	oklab(19.92% -0.0059 -0.0468)
OKLCH	oklch(19.92% 0.047 262.8)
XYZ	xyz(0.8292, 0.7752, 2.3910)
Luminance	0.0077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A152B #2B200A

analogous

#0A252B #0A152B #0F0A2B

triadic

#0A152B #2B0A15 #152B0A

tetradic

#0A152B #2B0A25 #2B200A #0A2B0F

square

#0A152B #2B0A25 #2B200A #0A2B0F

split-complementary

#0A152B #2B0F0A #252B0A

monochromatic

#060C19 #060C19 #0A152B #162D5D #21458E

Accessibility & contrast

On white

18.18

#0A152B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0A152B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A152B

18.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A152B	#FFFFFF	#000000	##FFFFFF
##0A152B	1.00	18.18	1.16	18.18
#FFFFFF	18.18	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B172C

Deuteranopia (green-blind)

#07142B

Tritanopia (blue-blind)

#001A1D

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #0a152b;
/* rgb */ color: rgb(10, 21, 43);
/* oklch */ color: oklch(19.9% 0.047 262.8);

Tailwind

colors: {
  custom: {
    50: '#4d5264',
    500: '#0a152b',
    950: '#000000',
  },
}

SCSS

$custom: #0a152b;
$custom-light: #4d5264;
$custom-dark: #000000;

JSON

{
  "hex": "#0a152b",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 43
  },
  "hsl": {
    "h": 220,
    "s": 62.264,
    "l": 10.392
  },
  "oklch": {
    "l": 0.1992,
    "c": 0.04713,
    "h": 262.8
  },
  "luminance": 0.00775
}

Semantic roles & 50–950 ramp

primary

#0A152B

secondary

#685329

accent

#AF42E5

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010205

muted

#77787A

Preview Lab

Preview with #0A152B

Body copy rendered with the generated semantic roles for this colour.

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